data_global _chemical_name_mineral 'Wattersite' loop_ _publ_author_name 'Groat L A' 'Roberts A C' 'Le Page Y' _journal_name_full 'The Canadian Mineralogist' _journal_volume 33 _journal_year 1995 _journal_page_first 41 _journal_page_last 46 _publ_section_title ; The crystal structure of wattersite, Hg4HgCrO6 ; _database_code_amcsd 0005429 _chemical_compound_source 'type sample from Clear Creek mercury mine, San Benito County, California, USA' _chemical_formula_sum 'Hg5 Cr O6' _cell_length_a 11.274 _cell_length_b 11.669 _cell_length_c 6.603 _cell_angle_alpha 90 _cell_angle_beta 98.19 _cell_angle_gamma 90 _cell_volume 859.807 _exptl_crystal_density_diffrn 8.891 _symmetry_space_group_name_H-M 'C 1 2/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '-x,y,1/2-z' '1/2-x,1/2+y,1/2-z' '-x,-y,-z' '1/2-x,1/2-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Hg1 0.00000 0.00000 0.00000 ? Hg2 0.27290 0.07744 0.29880 ? Hg3 0.33630 0.27667 0.20990 ? Cr 0.50000 0.81670 0.25000 0.01330 O1 0.35790 0.45080 0.14580 0.02640 O2 0.50520 0.73350 0.04510 0.01920 O3 0.37080 0.89410 0.20490 0.02680 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Hg1 0.01000 0.01490 0.01550 -0.00090 0.00160 0.00250 Hg2 0.03080 0.01480 0.02860 -0.00700 0.00100 0.00360 Hg3 0.02010 0.01340 0.02330 -0.00500 -0.00070 0.00140